Electric lamp



Nov. 20, 1923. 1,474,735

A. J. SANDERS ELECTR I C LAMP Filed July 22 1922 Patented Nov. 20,1923..

. UNITED STATES J. SANDERS, OF SPOKANE, WASHINGTON.

ELECTRIC min.

. Application filed. July 22, 1922. Serial No. 576,817.

To all whom it may concern:

Be it known that I, ALFRED J. SANDERS, a citizen of the United States,residin at Spokane, in Spokane Count and Washington, have invent certainnew and useful Improvements in Electric Lamps, of

'1 made up of pressed which the following is a ecification.

The present invention re ates to Improvements in Electric Lamps of thattype adapted either for use as a floor lamp, or as a table lamp, and theprimary objectof the invention is the provision of a lamp of thischaracter that is comparatively inexpensive in cost of production, maybe manufactured with facility, and provides a strong, durable, andattractive structure for performing its required functions.

Preferably, but not necessarily, the lamp is constructed as to itsvisible parts, of glass, and the standard or pedestal is made up ofmirror plates in order that-a large area 0 refiectin surface-may besecured for distribution 0 the light. rays from the electric lamp bulbs.In its embodiment, the structure of the lamp pedestal or standard ismade up in sections, thus permitting different sizes of lamps to bemaderangin from one section to several sections, and t e sections aresecurely and firmly connected together, as will be described.

In the accompan in drawings I have illustrated one comp ete example ofthe physical embodiment of my invention wherein the arts are combinedand arranged according to one of the best modesI have thus far devisedfor the practical application of the principles of my invention.

Flgure 1 is a view in side elevation showing one complete example of theelectric lamp constructed according to and embodyin my invention.

I igure 2 is a vertical sectional view of the lamp of Figure 1 with theshade omitted for convenience in illustration.

Figure 3 is a transverse sectional view of the'intermediate couplingcollar utilized for joiiing two sections of the pedestal or standarFigure 4 is an enlarged view at a sectionjoint in the pedestal, showingparts in section.

Figure 5 is a. transverse line 5-5 of Figure 1.

In the preferred form of the invention as shown in the drawings Iutilize a lamp base or cast glass, which sectional view at may be of anysuitable configuration or design as to'shape, but which is usually flatand of adequate dimensions to insure a wide tate of and-stable base forthe lamp structure, whether the lamp is to be used as a standing lamp onthe floor, or as a table lamp. In 1ts flat upper face the base isfashioned with a groove or grooves 2 of the required depth,

. preferably formed continuous. In the present instance, where anoctagonal or eight side pedestal is shown, the groove assumes the shapeof an octagon, but it will be obvious that with lamps of other shapes,as for instance round, hexagonal, square, or of other polygonal shapes,the shape of the base and the shape of the groove in the base willconform to the characteristics of the lamp. And of course the shapes ofother parts of the lamp to be described will conform with the artisticappearance of the base.

At its under side, and centrally thereof the lamp base is fashioned witha recess 3, and a .center 0 ening or hole 4 is provided in the base as sown, while the upper surface of the basemay be ornamented with a groove,as 5, or othero'rnamental'features maybe supplied for this glass base.

The standard or pedestal is composed of sections, and in theexemplification shown in the drawings, two sections designated as 6 and7 are employed. These and other sections, if, used, may be made up ofsuitable material to form cores for the pedestal sections. These cores 6and 7 are tubular, their central openings being designated 6' and 7'respectively, and the lower one as shown is some what conical or taperedwhile .the upper section is uniform in thickness throughout its length.The pedestal cores or sections, one imposed above another, are joinedand rigidly held together by meansof a tubular bolt 8 which occupies theopening in the base and the central bores of the superimposed pedestalsections. Within the recess in the bottom of the base a clamping nut 9is threaded on the lower end of the tubular. bolt, and a washer 10 isalso interposed in the recess for en agement by the nut. At its upperthreade end the tubular bolt is provided with a second clamping nut 11,and it will be apparent that by means of these two nuts the sections maybe clamped rigidly on the bolt."

The pedestal sections are trimmed or faced with glass plates 12, whichpreferably are of mirror-glass, cemented 0 otherwise secured to thecores of the pe estal sections.

The plates of the lower section of the pedes tal, as seen in Figure 2,project below the core 6 and are fitted into the groove or grooves 2 inthe upper surface of the lamp base 1, to form a close, protective jointfor the lower section and its base and insure a rigidity of structurebetween the section of the pedestal and the base.

At the upper end of the upper pedestal section a crown or cap 14 isprovided, which not only forms an ornamental feature for the pedestal,but also afi'ords a brace or support for the nut 11 and the tubular boltwhich projects through and above the cap and nut.

By means of an intermediate coupling collar 15, the two sections areheld in place and the joint between them is covered. This couplingcollar is also hexagonal in shape and is fashioned with a center hub 16havin a cylindrical bore to encase the tubular bo t and located betweenthe adjoining ends of the sections 6 and 7. Between the hub and theeriphery of the collar are fashioned ra iating webs 17 which not onlyprovide a light but strong structure, but also form openings through-the collar for transmission of light rays as will be described.

The usual feet or other supports as 18 are provided on the base of thelamp, and the electric bulbs 19 are supported from the projecting top ofthe tubular bolt, as at 19'. The wires for the electric currents to thelamps are indicated at 20 in Figure 2 where it will be seen that theyare concealed as they pass up through the base and tubular bolt to thesupport 19, and thence to the lamp sockets in usual manner. The shade 21is of artistic shape to conform to the other features of the lamp and isof proper size to correspond with the dimensions of the pedestal andbase. Suitable supporting members are utilized to hold the shade infixed or adjusted position. I

The base, intermediate coupling-collar, and crown or cap may be made ofglass and colored to suit different purposes and appearances, and theirsurfaces are highly polemme ished for distribution of the light raysfrom the electric bulbs. The openings in the collar between the Webs,permit passage of light rays therethrough, and not only the webs, butthe faces of the collar asslst in distributing the light rays, thusenhancing the artistic appearance of the lamp as a whole. The plates ofglass 12, which cover the area of the pedestal sections, bein made ofmirror glass, or glass with a re ecting backing, also provide a brightor brilliant appearance for the lamp and reflect the rays from theelectric bulbs. These glass plates 12 may conveniently and cheaply befashioned from waste piecesusually found in glass factories wheremirrors are manufactured, and the waste pieces are trimmed or fashionedto the desired shape and size for attachment to the exterior faces ofthe pedestal sections 6 and 7. The adjoining edges of the glass plates12 may be fashioned with beveled corners, and are capable of beinghighly ornamented for enhancing the artistic appearance of the lamp, andthe faces of these plates may also be ornamented as indicated inFigure 1. It will bu apparent that the parts of the lamp are assembledin such manner as to render invisible all structural details, resultingin an ornamental, strong, durable, and well braced structure which maybe manufactured with facility and at comparatively little expense.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is- The combination with a grooved basehaving a central opening, of a pedestal section having reflecting plateswith their lower edges in said grooved base, an upper pedestal sectionhaving reflecting plates, an intermediate collar joining said sections,a tubular clamping bolt passed through said base and sections, clampnuts on said bolt, electric bulbs supported at the upper end of saidbolt, and electric wires encased in said bolt.

In testimony whereof I aifix my signature.

ALFRED J. SANDERS.

